electricity, The house uses _______ to keep the lights bright at night., moved, She ______ the chair closer to the window to read better., solar power, Many schools now use ________- to save energy and protect the environment., solar panel, The roof has a _______ that collects sunlight during the day., free, The museum is ______ to enter on Sundays., turn on, Please _______ the computer before class starts.

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